The impact of synoptic weather on UK surface ozone and implications for premature mortality

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Video in TIB AV-Portal: The impact of synoptic weather on UK surface ozone and implications for premature mortality

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The impact of synoptic weather on UK surface ozone and implications for premature mortality
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Air pollutants, such as ozone, have adverse impacts on human health and cause, for example, respiratory and cardiovascular problems. In the United Kingdom (UK), peak surface ozone concentrations typically occur in the spring and summer and are controlled by emission of precursor gases, tropospheric chemistry and local meteorology which can be influenced by large-scale synoptic weather regimes. In this study we composite surface and satellite observations of summer-time (April to September) ozone under different UK atmospheric circulation patterns, as defined by the Lamb weather types. Anticyclonic conditions and easterly flows are shown to significantly enhance ozone concentrations over the UK relative to summer-time average values. Anticyclonic stability and light winds aid the trapping of ozone and its precursor gases near the surface. Easterly flows (NE, E, SE) transport ozone and precursor gases from polluted regions in continental Europe (e.g. the Benelux region) to the UK. Cyclonic conditions and westerly flows, associated with unstable weather, transport ozone from the UK mainland, replacing it with clean maritime (North Atlantic) air masses. Increased cloud cover also likely decrease ozone production rates. We show that the UK Met Office regional air quality model successfully reproduces UK summer-time ozone concentrations and ozone enhancements under anticyclonic and south-easterly conditions for the summer of 2006. By using established ozone exposure-health burden metrics, anticyclonic and easterly condition enhanced surface ozone concentrations pose the greatest public health risk.

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in UK quality is a big problem because
pollutants such as ozone mentioned oxide a
particle matter can cause of 250 thousand premature deaths per year and this can cost in excess of health services but 20 billion pounds now Jose is a key objective look at here in this study
and is controlled by torture chemistry emissions of
precursor gasses and metrology
such metrology is an important factor because this will control the transport and accumulation of agent and precursor gasses not to monitor what again understanding of these patterns structured patterns we use the land where the touch and this is a midday classification of the different weather types and the UK and we focus on some of April to September because this is when you have the highest the version now look at the
observations of modeling we use data from the awards which have the ROA network maintained like that and from NASA's tropospheric emissions spectrometer on board the or satellites we also used the metal fish quality unified model totem and standard distribution of years now focused on of fool and weather patterns but the ones of most significant work as a chronic conditions notice this high-pressure systems with light winds and you know very much transport pollutants as a chronic conditions the where you have in unstable weather and strong winds which will transport precursor gasses and Asian itself away from source regions populated areas other factors are wind direction as well such as Southeast flies which is meant to transport creation Clinton's from continental Europe say that Benelux region and you can get the transport of a Knox and dear C which over a volatile compounds have which downwind of Spanish region will have full laser now under NASA chronic conditions in southeastern this is where we see the strongest peak in the size and concentration now we use the model to try
and relate these to the mortality and distribution based on the chain isn't failed now speak we can see that you blow an increase of 10 to 50 microns meeting in the model and the southeast flow and of about 5 to 10 that you under its accommodation now when you relate this terms of daily mortality we find that of the excess staring death rates due to breed and on the high pressure system can optionally 40 people a day whereas in the differences because you're much higher signal will get these lots of pollution come from content Europe which can reach up to 50 people today in a control mentality and so anyone sort weather conditions you have user important things the public services to be able to deal with and mitigate for